Are you talking about the original Empire Earth or the Art of Conquest expansion disc?

If the former-

a) with blindwrite: read with subs in nibble mode; write dao pw

b) with clonecd: try first with the default game cd profile; if that doesn't work then try the Lite-on securom new profile that you can download from the profiles sticky on the clonecd forum

c) with alcohol: use securom new (not securom new 4.x) settings.

Remember too that if you want to play the copy from your writer rather than your dvd rom you'll have to enable either ccd's hide cdr media or alcohol's ignore media type before doing so.